Marine Weather and TidesTimber Hills, PA

Version 3.4

What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 5:39AM

Sunset 8:25PM

Saturday May 25, 2019 9:27 AM EDT (13:27 UTC)

Moonrise 12:24AM

Moonset 10:39AM

Illumination 60%

NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

ANZ530 Chesapeake Bay North Of Pooles Island- 736 Am Edt Sat May 25 2019 .small craft advisory in effect from noon today to 6 pm edt this evening... Today..S winds 5 to 10 kt. Gusts up to 20 kt late this morning and afternoon. Waves 1 ft. Tonight..S winds 5 to 10 kt. Gusts up to 20 kt until early morning. Waves 1 ft. A chance of showers and tstms. Patchy fog. Sun..W winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. Sun night..NW winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. Mon..N winds 5 kt. Waves less than 1 ft. Mon night..SE winds around 5 kt. Waves flat. A chance of showers. Tue..SW winds 5 to 10 kt. Waves 1 ft. A chance of showers in the morning, then a chance of showers and tstms through the night. Wed..SW winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms.

ANZ500 736 Am Edt Sat May 25 2019 Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will shift offshore of the eastern united states through today. A weak cold front will approach the waters Sunday, lingering nearby through Monday. High pressure off the southeastern united states coast will then be in control in the middle of the week. Small craft advisories may be needed for portions of the waters Sunday night into Monday and again on Wednesday.

Fxus61 kctp 251140
afdctp
area forecast discussion
national weather service state college pa
740 am edt Sat may 25 2019

Synopsis
The holiday weekend will feature warmer temperatures, increasing
humidity and a renewed chance for showers and thunderstorms,
mainly during the afternoon and evening hours today and
Sunday. Memorial day is expected to offer up fantastic weather
for much of the day with near normal temperatures and
comfortably lower humidity. A few more rounds of showers and
scattered thunderstorms with gusty wind and locally heavy rain
appear likely for both Tuesday and Wednesday afternoon and
evening.

Near term through tonight
Increasing mid-level warm advection gentle isentropic and
theta-e advection centered around the i305k theta sfc was
leading to bands of alto CU clouds sliding SE across the cwa
early today.

The eastern edge of an area of limited ml CAPE (up to to a few
hundred j kg) was located just west of the rt 219 corridor in
western pa. The nose of a 30-35kt wsw LLJ lifting this
instability over a warm front and cooler air near the south
shore of lake erie was responsible for a few small clusters of
heavy showers and isolated tsra headed into extreme NW pa.

This convection may nip warren county over the next several
hours as it gradually weakens during the convective min of the
day.

09z temps ranged from the chilly upper 40s over our NRN and ern
mtns to the lower 60s across the south-central valleys.

As high pressure slides east of the nj coast today, the light
serly llvl flow will help to maintain some cooler air across the
susq valley and points east with high temps a few to several deg
f below their normals which are in the low-mid 70s. Temps across
the SW half of our CWA (where the sfc warm front should lift
gradually north of during the midday and afternoon hours) will
reach the mid to upper 70s (or several to 10 deg f above
normal).

The approx NW half of the CWA is under a slight risk of severe
tsra this afternoon and evening, and also a slight risk for
excessive rain over the NW mtns (that will stay near the
intersection of the warm front and axis of highest pwat air -
1.5 to 2 inches - the longest).

A mrgl risk for svr tsra will extend further SE across the
central ridge and valley region of the state, where several
rounds of showers and gusty tsra with brief downpours should
fire within the tight gradient of CAPE along the quasi strnry
warm front.

0-1 km ehi's will be as high as 2.0 m2 s2 near the warm front
and the low LCL heights inject the potential for some transient
supercell structure and a potential for a few isolated weak
tornadoes.

This front will have difficulty pushing east into the
aforementioned cooler serly flow and marine layer off the
western atlantic. Sfc-based CAPE will be almost non-existent
cape to the east of a kelm to kunv and khgr line this afternoon
and evening, though some weak, elevated instability and slightly

neg 925 mb lis will move east to the susq river's mainstem by
23z and drift another 30-40 miles east during the evening hours,
supporting expansion of the expected numerous central and
western pa afternoon showers and tsra.

Basin average storm total rainfall between this afternoon and
12z Sunday will range from around 1.3 inches across NW pa to
less than 0.25 inch over our far SE zones.

Short term Sunday
Surface cold front trailing swwd from a sub-1000 mb sfc low over
nrn quebec canada will sag slowly SE across pa during the day
Sunday with a well-defined 500-300 mb speed MAX embedded in the
westerly flow riding over this llvl boundary during the
afternoon hours, helping to advect a growing area of showers and
tsra across at least the southern half of pa. Likelihood for an
additional 0.50 - 1.00 of rain exists across much of the region
near and to the south of a kidi to kmui line.

Temps prior to the onset of convection could really soar well
into the 80s across the SE valleys where the effects of the
westerly llvl downslope flow ahead of the cfront will be the
greatest, and cloud cover should be the least. The lower end of
the MAX temp range Sunday will occur across the NW mtns where
l-m 70s are expected.

Long term Sunday night through Friday
Memorial day looks quite nice from this early vantage point,
with rain-free weather, and comfortable temperatures humidity
levels. The approach of another warm front, followed by trailing
cold front Tuesday-Wednesday could well lead to more showers
and thunderstorms.

As mentioned above, temperatures will be on the warm side, with
daily highs mostly in the mid 70s-mid 80s range, and night-time
lows in the 50s and 60s.

Aviation
Vfr will dominate the weather pattern through the first half of
today. An approaching warm front will bring showers and
thunderstorms to the region this afternoon and evening. Latest
hrrr brings convection after 20z. After that all TAF sites will
be affected in some facet starting with bfd and jst. The showers
and storms will move eastward through 00z. There is a chance for
lingering showers and storms after 03z through the NW mtns. That
could bring another chance of ifr CIGS and vsbys to bfd.

The strongest showers and storms will affect the NW portion of
the region. Expect locally reduced conditions in the vicinity
of the convection. Any regions that receive showers could seeMVFR to ifr CIGS and vsby reductions after 06z Sunday.

Outlook
Sun... Restrictions possible near scattered thunderstorms.

Mon-vfr.

Tues-wed... GenerallyVFR, although a spotty showers or storm is
possible.

Weather Map and Satellite Images

(on/off) &nbspHelpWeather MapGOES Local Image of EDITNOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.Link to LoopOther links:
Northern PacificContential USFull GOES-East

Wind Forecast for State College, PA (9,2,3,4)

Disclaimer:The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.